To date, Apple has only said that it would be discussing the “future of iOS” and that again, appears to be iOS 6, which will replace iOS 5, the operating system that Apple announced at the last WWDC and released alongside the iPhone 4S in October of 2011.

iOS 6 has seen its fair share of leaks in recent days with several of its purported features rising to the surface ahead of Apple’s conference.

Apple is said to be including a native Maps application that will replace Google Maps as the default Maps application on the iPhone and iPad. The maps service is rumored to highly detailed 3D maps, something that Google announced for its own maps service a few days ago.

The software is also rumored to include Facebook integration much in the same fashion as Twitter in iOS 5. The other big feature is rumored to be Siri for the iPad.

Currently, Siri, the virtual personal assistant, is only available on the iPhone 4S.

Apple is also rumored to be announcing several other things including OS X Mountain Lion, new Macs – MacBook Pros with Retina Displays and a new MacBook Air are rumored – and Apple TV applications.